diff --git a/css-flexbox-1/Overview.bs b/css-flexbox-1/Overview.bs
index 7e318f43000..0cefeab4696 100644
--- a/css-flexbox-1/Overview.bs
+++ b/css-flexbox-1/Overview.bs
@@ -2249,7 +2249,7 @@ Packing Flex Lines: the 'align-content' property
Lines stretch to take up the remaining space.
If the leftover free-space is negative,
- this value falls back to ''safe flex-start''.
+ this value falls back to ''flex-start''.
Otherwise,
the free-space is split equally between all of the lines,
increasing their cross size.